Coupler for radio



June 1 1926.

AERIAL FILAM ENT A. P. HINSKY COUPLER FOR RADIO Filed June 25. 1925 Illlllllllllll iiiHiHIfI I llllllflll I III III

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ANTHONY P. HINSKY, F BROOKLYN, NEW YORK.

COUPLER FOR RADIO.

Application filed June 25, 1925. Serial No. 39,615.

ihis invention relates to a coupler for 1 to have a common axis with the secondary. radio circuits. An object of the invention is The primary windings 16 and 17, however. to provide a simple and etficient coupler are spaced apart syl'nmetrically with rewhich in its operation permits liner tuning, spect to the length of the common axis. i more stable operation, and economy of man- This is particularly clearly shown in Fig. 2.

uiiacture, which reduces the cost a consider- Disposed within the basket-ball second- IE5 le amount. ary, andwound in a ringlike fashion similar The invention 1S illustrated in the drawto the 00115 16 and 17, are two other primary ings, of which windings 18 and 19 which, when the sec- Figure 1 is a perspective View of the ondary is in its normal position shown in cou ler; Fig. 2, occupying a planecoincident with Fig. 2 is section on the line 22 of Fig. the planes occupied respectively by the coils 1;an 1 16 and 17 and,therefore, have a common o is a. diagrammatic representation axis with the windings 16 and 17 and with of the way in which the coils are disposed the rotor 14. The windings 16, 17, 18 and and c nn t d, 19 are, as shown in Fig. 3, connected in The form of the invention shown in the series; but the windings 18 and 19 are rodrawings is a preferred form, although it is tatable with the secondary 14, Whereas the understood that modifications in the con windings 16 and 17 are fixed. It will, therestruction and arrangement of the parts and fore, be noticed that the rotatable primary in the character of the materials used may be coils 18 and 19 are similarly symmetrically adopted without departing from the spirit disposed with relation to the common axis otthe invention as set forth in the appended above mentioned.

claims, The particular features and advantages This invention in its general aspect comcit this coupler are as iollows: prises a primary and a secondary, the sec- (1) It relates to a coupler whereby the ondary preferably being rotatable. The prifull range of inductance is obtained by a mary is divided into two portions, prefer- 180 revolution. ably connected in series, one portion being (2) it incorporates a tight and loose iniixed and the other portion being associated ductive coupling. or mounted with the rotatable secondary so (3) The construction as described reti) as to move therewith. In this manner it is quires a minimum amount of supporting matound that a much finer tuning is possible, teria-l, thereby reducing losses. the coupling is more stable, and because of 1) The rotor cuts the lines of the fixed the construction hereinafter described the primary at an even or uniform rate when economy of manufacture is considerably enrevolved and still remains equidistant at all hanced. 3 times therefrom, thus permitting a very in the preferred form 01 the invention even adjustment. shown in the drawings 1 have provided a (5) In this invention the rotor cuts the bracket plate 10 which is made, preferably, lines of the primary at various angles,

of one piece of metal with pedestal portions whereas in other types the lines of the pri- 1 and 12 to form bearings for shafts 13 many are cut at right angles. on which a secondary winding 14 is mount- What I claim is ed, this secondary portion being of the bass- 1. A coupler for radio circuits, which coinketball type and rotatable with the shaft. prises a rotatable secondary coil, a primary lriounted on insulating plates 15, one of winding having a portion fixed and surwhich is shown in 1, are two ringlike rounding the secondary, another portion of primary coils 16 and 17 adapted in the northe primary movably disposed with the secmal position of the secondary shown in Fig. ondary and supported within the secondary,

mid movable portion of the prin'iary beir cmmected in series with the fixed portion of (ha primary.

51A coupler for radio circuits, which comprises a b-iisi-mt-bzzi V vondary pair of ringlike primal; coils fried in posltion M'OUD'l the scconaary, .iziiil primary being w mced apart symmetrically with respect to the axis or the secondary so that the {W0 fixr-(l primary mils and the secondary haw a summon axis, another pair of primary coils; being" supported within the secondary, said second pair of prinmry coils being Wound rinpfiike, Said second pair 01 primary coils being rnorubie with the Secondary and 1 connected, in @ries with the fixed pair of primary coils.

ANTHOB Y P. HINSK 1' 

